JP2009087030A - Information providing system, on-vehicle device and information providing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To precisely inform a driver of danger information at an intersection. <P>SOLUTION: An infrastructure device group includes: an imaging device for imaging the status in the vicinity of the intersection; and an information providing device installed in the vicinity of a road in the vicinity of the intersection to transmit at least either a picked-up image of the imaging device or warning information based on the picked-up image with the position of the intersection. An on-vehicle device calculates a residual distance to the intersection based on the current position of the own device and the position of the imaging device in displaying the picked-up image and warning information received from the infrastructure device group, and alters the display configuration of at least either the picked-up image or the warning information based on the residual distance. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an information providing system, an in-vehicle device, and an information providing method for providing information related to other vehicles or pedestrians by an infrastructure device group installed in the vicinity of a road and an in-vehicle device mounted on the vehicle. The present invention relates to an information providing system, an in-vehicle device, and an information providing method that can provide information acquired by the driver in a form that is easily recognized by a driver.

  An infrastructure coordination system that notifies drivers and other passengers of traffic conditions that change from time to time by performing road-to-vehicle communication between a group of infrastructure devices installed near intersections and roads and in-vehicle devices mounted on vehicles such as automobiles. Are known.

  In such an infrastructure cooperation system, for example, when a car turns right at an intersection, a camera is installed beside the intersection in order to capture a blind spot vehicle that goes straight behind the shadow of the preceding oncoming vehicle. An information providing device that wirelessly transmits information from the camera to the in-vehicle device is installed beside the road. The in-vehicle device alerts the driver by displaying an image captured by a camera beside the intersection on a display such as a car navigation system.

  However, if a driver is alerted even when there is no oncoming vehicle, the driver will be confused and hindered driving, so a method for suppressing redundant alerts has been proposed. For example, Patent Document 1 discloses a method of performing notification of oncoming vehicle information only when a right turn winker is operated. Patent Document 2 discloses a method of performing notification of oncoming vehicle information only when an oncoming vehicle is detected.

JP 2005-11249 A JP 2006-4217 A

  However, even if it is a case where the alerting opportunity is reduced using the technique disclosed in Patent Document 1 or Patent Document 2, driver confusion cannot be fundamentally prevented. This is because when calling attention using a camera image installed at an intersection, a camera image captured from a direction different from the driver's viewpoint (for example, a direction looking down on the intersection from above) was presented as described above. This is because the driver is confused by the difference from the real field of view and it is difficult to make a determination by associating the camera image with the real field of view instantaneously.

  Even if text information / voice information such as “There is an oncoming vehicle at the intersection” is provided instead of a camera image, if the information is suddenly provided, the driver will be confused, and there will be much information. Can no longer be used effectively.

  Therefore, how to realize an information providing system, an in-vehicle device, and an information providing method capable of providing the information acquired by the infrastructure device group in a form that is easily recognized by the driver is a major issue. .

  The present invention has been made to solve the above-described problems caused by the prior art, and an information providing system, an in-vehicle device, and an information providing system that can provide information acquired by the infrastructure device group in a form that is easily recognized by a driver. An object is to provide an information providing method.

  In order to solve the above-described problems and achieve the object, the present invention provides an imaging device that captures an image of a situation near an intersection, a warning image based on the captured image of the imaging device, which is installed near a road near the intersection, and the captured image An infrastructure device group including an information providing device that transmits at least one of the information together with the position of the intersection; display means for displaying at least one of the captured image and the warning information; a current position of the own device and the imaging At least one of distance calculation means for calculating the remaining distance to the intersection based on the position of the apparatus, the captured image displayed on the display means based on the remaining distance calculated by the distance calculation means, and the warning information And an in-vehicle device having a display control means for changing a display form.

  According to the present invention, the infrastructure device group is installed in the vicinity of the road near the intersection, the imaging device that captures the situation near the intersection, and at least one of the captured image of the imaging device and the warning information based on the captured image, And an information providing apparatus that transmits the information together with the position of the intersection. Then, when displaying the captured image and warning information received from the infrastructure device group, the in-vehicle device calculates the remaining distance to the intersection based on the current position of the own device and the position of the imaging device, and based on the remaining distance The display form of at least one of the captured image and the warning information is changed. In this way, by processing at least one of the warning information and the captured image based on the remaining distance and providing the information to the driver, the information acquired by the infrastructure device group can be provided in a form that is easily recognized by the driver. There is an effect.

  Exemplary embodiments of an information providing system, an in-vehicle device, and an information providing method according to the present invention will be described below in detail with reference to the accompanying drawings.

  FIG. 1 is a diagram illustrating an overview of the information providing system according to the present embodiment. As shown in the figure, the information providing system 1 includes an infrastructure device group provided on the road side and an in-vehicle device 20 provided on the vehicle. The infrastructure device group includes an imaging device 13 that captures traffic conditions at an intersection, an information providing device A11 that receives information such as a captured image from the imaging device 13 and wirelessly transmits the information to the in-vehicle device 20, and an information providing device B12.

  Further, the information providing device A11 is installed at a position farther from the intersection than the information providing device B12, and a vehicle heading for the intersection first receives information from the information providing device A11 (information providing start point A in FIG. Next, information from the information providing apparatus B12 is received (see the information provision start point B in the figure).

  By the way, the imaging device 13 installed in the vicinity of the intersection is often installed at a position where the intersection is looked down from above in order to capture passing vehicles and pedestrians at the intersection without blind spots (see 13a in the figure). In this way, by installing the imaging device 13 at a position where the line of sight is good, it is possible to reliably image the following vehicle hidden behind the oncoming vehicle approaching the intersection.

  However, when the captured image captured in this manner is transmitted to the in-vehicle device 20 via the information providing device (for example, the information providing device B12), displayed on the display of the in-vehicle device 20 and provided to the driver, the driver There is a problem that it is impossible to instantaneously determine what kind of driving operation should be performed by looking at this captured image.

  This is because the viewpoint viewed from the imaging device 13 and the viewpoint of the driver are greatly different, so for the driver, the correspondence relationship between an object such as an oncoming vehicle reflected in the real field of view and an object such as an oncoming vehicle reflected in the display is shown. This is because it is difficult to judge instantly.

  Therefore, in the information providing system 1 according to the present embodiment, the information provided from the infrastructure device group is processed and provided to the driver step by step to improve the recognition efficiency by the driver.

  Specifically, when warning information about the traffic situation at the intersection is received from the information providing apparatus A11 installed at a position far from the intersection, the remaining distance to the intersection is calculated, and the warning information is displayed based on the calculated remaining distance. The form is to be changed. Further, when a captured image of the intersection is received from the information providing apparatus B12 installed at a position closer to the intersection than the information providing apparatus A11, a predetermined portion is cut out from the received captured image, and a clipped image is obtained based on the remaining distance to the intersection. The enlargement ratio and the display form are to be changed.

  In other words, a so-called notification preparation stage is provided before notifying the driver of a captured image by the imaging device 13, and further, when notifying the captured image, the cut-out image is processed and provided. Therefore, it is possible to effectively mitigate the driver's judgment delay caused by the difference between the viewpoint viewed from the imaging device 13 and the driver's viewpoint.

  Next, the configuration of the infrastructure apparatus group illustrated in FIG. 1 will be described with reference to FIG. FIG. 2 is a diagram illustrating a configuration of each device included in the infrastructure device group 10. As shown in the figure, the infrastructure device group 10 includes an imaging device 13 having a camera that captures traffic conditions in the vicinity of an intersection, and an information providing device 11 that receives information about the traffic conditions from the imaging device 12 and transmits the information to the in-vehicle device 20. And the information providing device 12. In addition, although the figure shows the case where the number of information providing apparatuses is two, the number of information providing apparatuses is not limited.

  Also, as shown in the figure, the information providing device 11 receives warning information in text format or binary format from the moving body detection unit 13b of the imaging device 13 (for example, there is an oncoming vehicle or a pedestrian in the vicinity of the intersection). Information). Further, the information providing apparatus 12 receives a captured image captured by the imaging apparatus 13. The information providing apparatus 11 shown in FIG. 2 corresponds to the information providing apparatus A11 shown in FIG. 1, and the information providing apparatus 12 shown in FIG. 2 corresponds to the information providing apparatus B12 shown in FIG. Yes. The information providing apparatus 12 may receive warning information in addition to the captured image.

  The information providing apparatus 11 includes an antenna 11a, a transmission processing unit 11b, and an information input unit 11c. The information input unit 11 c receives the warning information described above from the moving object detection unit 13 b of the imaging device 13. Here, the warning information includes position information (for example, latitude and longitude) of the intersection where the imaging device 13 is installed. The transmission processing unit 11b wirelessly transmits the warning information received from the information input unit 11c to the in-vehicle device 20 mounted on the vehicle passing near the information providing device 11 via the antenna 11a.

  The information providing apparatus 12 includes an antenna 12a, a transmission processing unit 12b, and an information input unit 12c. The information input unit 12 c receives captured images near the intersection from the camera 13 a of the imaging device 13 from the imaging device 13. The transmission processing unit 12b wirelessly transmits the captured image received from the information input unit 12c to the in-vehicle device 20 mounted on the vehicle passing near the information providing device 12 via the antenna 12a. Note that the information input unit 12c may receive warning information from the moving object detection unit 13b of the imaging device 13. In this case, the warning information includes the position information of the intersection where the imaging device 13 is installed. Further, the transmission processing unit 12b may always transmit a captured image, or may transmit a captured image only when a moving object detection unit 13b described later detects a moving object.

  Although the information providing device 11 and the information providing device 12 are described as different devices in the figure, the information providing device 11 and the information providing device 12 relay information received from the imaging device 13 to the in-vehicle device 20. It is good also as comprising as the same apparatus.

  The imaging device 13 includes a camera 13a and a moving object detection unit 13b, and stores position information in the position information storage unit 13c. Here, the position information is information such as latitude and longitude indicating the position of the intersection where the imaging device 13 is installed. Note that the position information storage unit 13c may store information such as latitude and longitude indicating the installation position of the imaging device instead of information such as latitude and longitude indicating the position of the intersection.

  The camera 13a is a camera such as a CCD (Charge Coupled Devices) camera provided at a position overlooking the intersection. The captured image captured by the camera 13a is updated in real time and is output to the information providing apparatus 12 as needed. The moving object detection unit 13b detects a moving object such as an oncoming vehicle or a pedestrian based on an image captured by the camera 13a and generates a text message such as “There is an oncoming vehicle”. Processing to output to the information providing apparatus 12 is performed. The moving object detection unit 13b also reads the position information from the position information storage unit 13c and performs a process of outputting the position information together with the above-described character message.

  Next, the configuration of an in-vehicle device mounted on a vehicle such as an automobile will be described with reference to FIG. FIG. 3 is a diagram illustrating the configuration of the in-vehicle device 20. As shown in the figure, the in-vehicle device 20 includes a reception processing unit 21, a display 22, a control unit 23, and a storage unit 24. The control unit 23 further includes a distance calculation unit 23a, a warning information generation unit 23b, an image processing unit 23c, and an image composition processing unit 23d (display control means). A current position information storage unit 24a and map information 24b for storing current position information of a vehicle (or a vehicle on which an in-vehicle device is mounted) are stored. In the figure, only the components necessary for explaining the feature points of the in-vehicle device 20 are described. However, a so-called car navigation device has a GPS (Global Positioning System) function and a map display function. Shall have.

  The reception processing unit 21 is connected to an antenna that receives radio waves, and performs a process of outputting information received from the information providing device 11 or the information providing device 12 to each processing unit of the control unit 23. It is. In the figure, “camera position information (corresponding to the position information 13c in FIG. 2)” indicating the position information of the intersection where the imaging device 13 (see FIG. 2) is installed is sent to the distance calculation unit 23a and “there is an oncoming vehicle. "Text information (information generated by the moving object detection unit 13b in FIG. 2)" representing the text message such as "to the warning information generation unit 23b, and" image information "representing the image captured by the camera 13a of the imaging device 13 is processed. The case where it distributes to the part 23c is shown.

  The display 22 is, for example, a display such as a touch panel display, and is a display device used in a general car navigation system. In addition to the current vehicle position and surrounding map information, the display 22 displays information generated by each processing unit of the control unit 23. Further, the display 22 may be configured to be translucent on the windshield in front of the driver, and the transmitted front scenery and display information may be combined.

  The control unit 23 processes the information from the information providing apparatus 11 and the information providing apparatus 12 received from the reception processing unit 21 and displays the information on the display 22 in a form that is easily recognized by the driver. The distance calculation unit 23a compares the camera position information indicating the position information of the intersection where the imaging device 13 is installed with the current position information stored in the current position information storage unit 24a, thereby obtaining the corresponding intersection. It is a process part which performs the process which calculates remaining distance.

  The warning information generation unit 23b is a processing unit that generates, for example, an icon that symbolically indicates that there is an oncoming vehicle based on text information such as “There is an oncoming vehicle”. Such icons may be generated in advance in the storage unit 24 or the like, and the corresponding icon may be selected, or a new icon may be created by combining icons corresponding to each character included in the text information. It is good also as producing | generating.

  For example, the image processing unit 23c is a processing unit that performs processing of processing image information at an intersection that is updated in real time from the information providing device 12 as needed. Specifically, the image processing unit 23c performs a process of cutting out only a portion where a moving object is recognized from the image information received from the reception processing unit 21. The details of the cutout process will be described later with reference to FIG.

  Based on the remaining distance to the intersection calculated by the distance calculation unit 23a, the image composition processing unit 23d stores the information processed by the warning information generation unit 23b or the image processing unit 23c in the map information storage unit 24b. It is a processing unit that performs processing of combining with information and outputting to the display 22.

  The storage unit 24 is a storage unit configured by a nonvolatile RAM (Random Access Memory), an HDD (Hard Disk Drive), or the like. The current position information storage unit 24a stores information (for example, latitude and longitude) indicating the current position of the in-vehicle device 20 acquired by a GPS (Global Positioning System) function or a sensor such as a vehicle speed sensor. Updated as needed. The map information storage unit 24b stores so-called map information including positions of roads, intersections, buildings, and the like.

  When the in-vehicle device 20 receives the text information from the information providing device 11 at the information provision start point A, the in-vehicle device 20 synthesizes the icon generated by the warning information generating unit 23b and the map information 24 and displays them on the display 22 so that it can be displayed to the driver. A preliminary notification that there is a danger at the intersection is made (preliminary notification state). When the image information obtained by imaging the intersection is received from the information providing device 12 at the information provision start point B, the image information processed by the image processing unit 23 and the map information 25 are combined and displayed on the display 22 (image notification). Status).

  Thus, by providing the preliminary notification state prior to the image notification state, the driver can easily recognize the notification image. In addition, since only necessary portions are cut out from the image information received from the information providing device 12 and displayed, it is possible to effectively reduce the driver's judgment delay due to the difference between the viewpoint viewed from the imaging device 13 and the driver's viewpoint. Can be relaxed.

  Next, a display image in the preliminary notification state will be described with reference to FIG. FIG. 4 is a diagram showing a display image in the preliminary notification state. In addition, 41 in the figure shows a display image on the display 22 immediately after receiving information from the information providing apparatus 11 at the information provision start point A, and in FIG. 42, the vehicle has traveled a predetermined distance toward the intersection. The display images on the display 22 at the time are shown.

  As shown at 41 in the figure, when text information is received from the information providing apparatus 11, a message corresponding to the text information is displayed in the display area shown at 41b. For example, as shown in the figure, a message “Please note that there is an oncoming vehicle at the intersection ahead” is displayed as this message. Note that voice message notification may be performed together with the message display or instead of the message display.

  Further, in the display area indicated by 41a in the figure, the vehicle position 41c and the oncoming vehicle icon 31d are combined with map information such as roads. And as shown to 42 of the figure, when a vehicle approaches an intersection, map information will be expanded and displayed. A region 42e surrounded by a broken line corresponds to a region 41e surrounded by a broken line 41 shown in FIG. An oncoming vehicle icon 42d is synthesized at the corresponding intersection, and a vehicle position 42c is synthesized at the current position of the vehicle. Note that the warning message displayed in the display area 41b is continuously displayed in the display area 42b.

  The enlargement rate of the map information is updated as needed based on the remaining distance to the intersection calculated by the distance calculation unit 23a. As described above, the map information is enlarged as the vehicle approaches the intersection, so that the driver can surely recognize the dangerous intersection such as the oncoming vehicle.

  Next, image cutting processing by the image processing unit 23c of the in-vehicle device 20 will be described with reference to FIG. FIG. 5 is a diagram showing an outline of the image cutting process by the image processing unit 23c. 51 shown in the figure is a picked-up image of an intersection imaged by the image pickup apparatus 13 and received via the information providing apparatus 12, and 52 shown in the figure is a cut-out image cut out by the image processing unit 23c. . The captured image 51 is notified when the vehicle on which the in-vehicle device 20 is mounted passes the information provision start point B shown in FIG. 1 and is updated in real time thereafter.

  As shown in 51 of the figure, the image picked up by the image pickup device 13 is an image obtained by picking up a wide area around the intersection from above the intersection. However, even if such a wide range of images is notified, the driver is confused by the difference in viewpoint from the actual field of view and it is difficult to perform an appropriate driving operation.

  The image processing unit 23c cuts out a portion having an image change from the captured image 52 updated in real time. For example, an oncoming vehicle that stops at an intersection and blinks the right turn blinker, and a subsequent vehicle approaching from behind the oncoming vehicle are detected by comparing time-series captured images 52. Then, a rectangular area including the oncoming vehicle and the following vehicle is determined as a cutout area (see 51a in FIG. 5), and an image corresponding to this cutout area is set as a cutout image 52. It should be noted that a portion close to the driver's viewpoint in the vehicle on which the vehicle-mounted device 20 is mounted may be determined in advance as a cut-out area from the oncoming lane area, the intersection area, the pedestrian crossing area, or the like in the captured image 52. .

  Next, a display image in the image notification state will be described with reference to FIG. FIG. 6 is a diagram illustrating a display image in the image notification state. In addition, 61 in the figure shows a display image on the display 22 after receiving information from the information providing apparatus 12 at the information provision start point B, and 62 in the figure shows the display 22 after the vehicle enters the intersection. The display images in are shown respectively. Also, 61c in the figure is an image corresponding to the cutout area 51a determined in FIG.

  In the map display area 61a of the figure, map information is displayed as indicated by 42e in FIG. On the other hand, the image 61c processed by the image processing unit 23c is displayed in the display area 61b. When the vehicle approaches the intersection, the image 61c is enlarged and displayed as indicated by 61d in the figure, and when the vehicle further approaches the intersection, the image 61c is further enlarged and displayed in the display area 61b.

  The enlargement ratio of the image 61c is updated as needed based on the remaining distance to the intersection calculated by the distance calculation unit 23a. Thus, as the image approaches the intersection, the image 61c is enlarged, so that the driver can recognize the oncoming vehicle with a sense close to the image of the real field of view, and can easily recognize the distance to the intersection.

  If the vehicle enters the intersection, the image 61c is displayed over the entire map display area 62a, and a warning message indicating that there is an oncoming vehicle at the intersection is displayed in the display area 62b. As described above, by further enlarging and displaying the image 61c in the intersection, the driver can easily recognize the oncoming vehicle or the pedestrian in the image.

  Next, the process procedure performed in the vehicle-mounted apparatus 20 is demonstrated using FIG. FIG. 7 is a flowchart showing a processing procedure in the in-vehicle device 20. This flowchart is repeated while the power of the in-vehicle device 20 is turned on. As shown in the figure, it is determined whether or not information is received from the information providing apparatus A11 installed at the information provision start point A (step S101). If the information is received (step S101, Yes), the distance The calculation unit 23a calculates the distance (remaining distance) to the intersection (step S102).

  Subsequently, the image composition processing unit 23d changes the scale of the map based on the distance to the intersection (step S103), combines the icons generated by the map and the warning information generation unit 23b, and displays them on the display 22 (step S103). S104). If information has not yet been received from the information providing apparatus A11 (No in step S101), step S101 is repeated until information is received from the information providing apparatus A11.

  Following step S104, it is determined whether information has been received from the information providing apparatus B12 installed at the information provision start point B (step S105). If information has been received (step S105, Yes). The image processing unit 23c cuts out a partial image close to the driver's viewpoint (step S106).

  Subsequently, the distance calculation unit 23a calculates the distance (remaining distance) to the intersection (step S107), and changes the scale of the cut image extracted in step S106 based on the distance to the intersection (step S108). . Then, the image composition processing unit 23d synthesizes the cut image whose map and scale have been changed and displays the synthesized image on the display 22 (step S109). If information has not yet been received from the information providing apparatus B12 (No at Step S105), the processes after Step S102 are repeated. That is, the scale of the map is changed based on the distance to the intersection until information from the information providing apparatus B12 is received.

  Next, it is determined whether or not the vehicle has entered the intersection based on the remaining distance calculated by the distance calculation unit 23a (step S110). If the vehicle has entered the intersection (step S110, Yes), the map display area of the display 22 is displayed. The cut image is displayed (step S111), and the process is terminated. If it is determined in step S110 that the vehicle has not yet entered the intersection (step S110, No), the processing from step S107 onward is repeated. That is, the scale of the cutout image is changed based on the distance to the intersection until the intersection is entered.

  As described above, in the present embodiment, the infrastructure apparatus group captures the traffic situation in the vicinity of the intersection and generates warning information based on the captured image, and the road where the distance to the intersection is the first distance. A first information providing device that is installed in the vicinity, receives the position and warning information of the imaging device from the imaging device, and transmits them to the in-vehicle device; and a second distance in which the distance to the intersection is smaller than the first distance And a second information providing device that receives a captured image from the imaging device and transmits it to the in-vehicle device. The in-vehicle device calculates the remaining distance to the intersection based on the current position of the own device and the position of the imaging device, and changes the display state of the warning information or the captured image based on the calculated remaining distance and displays it together with the map information. It was decided to be displayed on the part.

  Therefore, by processing the warning information or the captured image based on the remaining distance and providing it to the driver, the information acquired by the infrastructure device group can be provided in a form that is easily recognized by the driver. In addition, by providing a preliminary notification state that notifies that there is a danger at the intersection prior to the image notification state that notifies the image of the intersection, the warning information is notified to the driver step by step. Can be improved.

  As described above, the information providing system, the in-vehicle device, and the information providing method according to the present invention are useful for preventing traffic accidents, and are particularly suitable when it is desired to accurately notify the driver of the danger in the vicinity of the intersection.

It is a figure which shows the outline | summary of the information provision system which concerns on a present Example. It is a figure which shows the structure of each apparatus contained in an infrastructure apparatus group. It is a figure which shows the structure of a vehicle-mounted apparatus. It is a figure which shows the display image in a preliminary notification state. It is a figure which shows the outline | summary of the image cutting-out process by an image process part. It is a figure which shows the display image in an image notification state. It is a flowchart which shows the process sequence in a vehicle-mounted apparatus.

Explanation of symbols

1 Information Providing System 10 Infrastructure Device Group 11 Information Providing Device A
11a Antenna 11b Transmission processing unit 11c Information input unit 12 Information providing apparatus B
12a antenna 12b transmission processing unit 12c information input unit 13 imaging device 13a camera 13b moving object detection unit 13c position information storage unit 20 in-vehicle device 21 reception processing unit 22 display 23 control unit 23a distance calculation unit 23b warning information generation unit 23c image processing unit 23d Image composition processing unit 24 Storage unit 24a Current position information storage unit 24b Map information storage unit 41c, 41c Vehicle position 41d, 42d Oncoming vehicle icon 51 Captured image 52 Cut image

Claims (9)

An imaging device for imaging the situation near the intersection;
An infrastructure device group, which is installed in the vicinity of a road near the intersection and has an information providing device that transmits at least one of the captured image of the imaging device and warning information based on the captured image together with the position of the intersection;
Display means for displaying at least one of the captured image and the warning information;
Distance calculating means for calculating a remaining distance to the intersection based on the current position of the own device and the position of the imaging device;
An in-vehicle device having display control means for changing the display form of at least one of the captured image and the warning information displayed on the display means based on the remaining distance calculated by the distance calculation means;
An information providing system comprising: The information providing apparatus includes:
A first information providing device that is installed at a position near a road where the distance to the intersection is a first distance, receives the position of the imaging device and the warning information from the imaging device, and transmits the information to the in-vehicle device;
A second information providing apparatus that is installed at a position near a road where the distance to the intersection is a second distance smaller than the first distance, receives the captured image from the imaging apparatus, and transmits the captured image to the in-vehicle apparatus. The information providing system according to claim 1, further comprising:   The information providing system according to claim 1, wherein the display control unit causes the display unit to display at least one of the warning information, the captured image, and map information. The in-vehicle device is
Warning information generating means for generating an icon corresponding to the content of the warning information based on the warning information received from the information providing device;
The display control means of the in-vehicle device is
The information providing system according to any one of claims 1 to 3, wherein the map information is enlarged and displayed as the remaining distance decreases with respect to the icon generated by the warning information generation unit. The in-vehicle device is
Image processing means for generating a cut-out image obtained by cutting out a predetermined part from the captured image received from the information providing apparatus;
The display control means of the in-vehicle device is
5. The information providing system according to claim 1, wherein the cut image generated by the image processing unit is enlarged and displayed as the remaining distance decreases. The image processing means of the in-vehicle device is:
6. The information providing system according to claim 5, wherein the cut-out image is generated by cutting out only a predetermined part where a moving object is recognized by comparing the captured images in time series. The display control means includes
6. The information providing system according to claim 4, wherein only the cut image is displayed over the entire display unit in the intersection. An imaging device that captures a situation near an intersection; and an information providing device that is installed in the vicinity of a road near the intersection and transmits at least one of a captured image of the imaging device and warning information based on the captured image together with the position of the intersection. A vehicle-mounted device that receives at least one of the captured image and the warning information from an infrastructure device group including:
Display means for displaying at least one of the captured image and the warning information;
Distance calculating means for calculating a remaining distance to the intersection based on the current position of the own device and the position of the imaging device;
Display control means for changing a display form of at least one of the captured image and the warning information displayed on the display means based on the remaining distance calculated by the distance calculation means;
A vehicle-mounted device comprising: An information providing method for providing information on other vehicles or pedestrians with an infrastructure device group installed in the vicinity of a road and an in-vehicle device mounted on the vehicle,
An imaging process included in the infrastructure group, and an imaging device installed near the intersection captures an image of the situation near the intersection;
The information providing apparatus included in the infrastructure group and installed near the road near the intersection transmits at least one of the captured image of the imaging apparatus and warning information based on the captured image to the in-vehicle apparatus together with the position of the intersection. Information providing process,
A distance calculating step in which the in-vehicle device calculates a remaining distance to the intersection based on a current position of the own device and a position of the imaging device;
A display change step of changing a display form of at least one of the captured image and the warning information displayed on the display means based on the remaining distance calculated by the distance calculation step;
An information providing method comprising:

Images